acpi: cpuhp: spec: add typical usecases
Document work-flows for * enabling/detecting modern CPU hotplug interface * finding a CPU with pending 'insert/remove' event * enumerating present and possible CPUs Signed-off-by: NIgor Mammedov <imammedo@redhat.com> Message-Id: <1575896942-331151-9-git-send-email-imammedo@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NLaszlo Ersek <lersek@redhat.com>
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